Photographic camera



' 1 617,080 Feb. 8, 1927. F. T. POWERS I PHOTOGRAPHIC CAMERA OriginalFiled Feb. 19, 1918 2' Sheets-Sheet l IN VEN TOR ATTO NEY Feb; 8, 1927.

- 1,617,080 F. T. POWERS PHOTOGRAPHIC CAMERA Original Filed Feb. 19,1918 2 Sheets-Sheet 2 iv... FNS.

IN VEN TOR A TTORNE Y Patented Feb. 8,, 192?. I

UNi rare PATENT-OFFICE.

FRANK '1. POWERS, OF NEW YORK, N. Y., ASSIGNOR TO POWERS PHOTO ENGRAVINGCOMPANY, OF NEW YORK, N. Y.,

A CORPORATION OF NEW YORK.

PHOTOGRAPHIC CAMERA.

Original application filed February 19, 1918, Serial No. 218,059.Divided and this application filed December 7, 1921.

ferred to and constituting a part hereof,-

illustrate one embodiment of the invention, and together with thedescription serve to ex lain the principles thereof.

f the drawings:

Fig. 1 is a vertical, longitudinal section of the camera;

Fig.2 is a fragmentary elevation, partly in section and furtherenlarged, of the throw 01f for the feed rolls for the sensitized web;

Fig. 3 is a fragmentary elevation of the 'rear of the camera, that is,the right hand end in Fig. 1, showing certain controls for theb feedingmechanism for the sensitized Fig. 4is a detail of the shown at the topof Fig. 3.

Fig. 5 is a horizontal, sectional detail, on the-line 55 of Fig. 3'; and

Fig. 6 is a perspective, fragmentary detail of a part of the rolleractuatin and controlling mechanism of. Fig. 5, s own on a larger scale.

his application is a division of application Serial No. 218,059, filedFeb. 19, 1918, allowed May 18, 1921, refiled July 24, 1923, Ser. No.653,618.

In accordance with the invention, the rear end of the camera opens intoa dark room, in such a way, that the film holding roll and filmreceiving roll are accessible from within the dark room whereby the filmis demountgauge or stop able intothe dark room.

Serial No. 520,621.

provided for feeding the film forward in lengths just suflicient forsingle exposures, and for marking successive lengths. Suitable guide andtension rollers for controlling the movement of the film are provided.

Referring in detail to the embodied form of camera, the camera body 1 isshown, having connected therewith the usual extensible and contractiblebellows 2, the lens 3 being carried by a support 4 at the front end ofthe bellows. The lens supporting frame 4 is slidable to and fro uponguideways 5, in a well-known manner, to focus the camera.

In accordance with the invention, and as I embodied, there is providedwithin the camera a web y of light-sensitive material for receivingsuccessive exposures, one after another, so that it is only necessary tofeed forward the web 3 for the space or distance occupied by an exposurebetween the successive exposures. In connection therewith, means areprovided for readily inserting an unexposed roll, for removing anexposed roll, or a portion thereof, and for threading the web throughthe camera.

As embodied a roll of sensitized film, paper or other suitable materialis carried upon a shaft or mandrel 61, the shaft 61 being rotatablysupported in side frame pieces 62. In the frame pieces 62 are providedslots 63, preferably primarily upwardly and then downwardly disposed ordirected, so that the roll 60 may be easily and readily lifted intoposition, and will then remain therein until intentionally removed.

The web or strip y of light sensitive material is presented at, andguided past, the focal plane or plane of exposure of the camera by"suitable means. The embodied form thereof comprises in art a pair ofcooperating guide and tension rollers 64 and 65. The roller 64 ispreferably maintained in fixed position, the roller 65 beingspringpressed thereagainst and also movable toward and away therefrom tofacilitate the introduction of new web or strip 3/ into the camera.

The embodied form of means for effecting these functions comprises apair of shouldered slots 66 (Figs. 1 and 2) formed in the frame plates62, the pintles 67 of which there are two, one being shown in Fig. 2 ofthe roller 65 projecting through the respective slots 86. The pintles 67are acted upon by springs 68, which tend to press the roller 65resiliently toward the roller as with the strip 3 therebetween. 5V henthe roller 65 is lifted upwardly by the operator it will pass to and beheld in the osition shown in Fig. 2, thereby maintaining the rolls 64and 65 in separated po sition while the strip is threaded therethrough,and when the roll 65 is drawn slightly upwardly and to the right in Fig.2 it will pass to the spring-pressed tensioning position shown in Fig.1.

A device may be provided to marl; the iocations of the exposure, such asa point 59 on roller 64, so that the exposures may be iocated on thestrip previous to development if desired.

A second pair of guide and tension rolls 69 and 70 respectively areshown cooperating with the web y upon the opposite side of the place ofexposure in the camera, and these rolls preferably are similar inoperation and construction to the rolls 64 and 65, already described.The means for holding off the roll 70 during the threading through ofthe web, and permitting it to press resiliently against the web duringthe feeding forward thereof, are indicated generally by referencenumeral 71 in Fig. 1.

Means are provided by the invention for accurately measuring andpositioning the successive exposures made upon the sensitive web g andin the embodied form thereof, there is provided on the exterior ofthecamera (Fig. 3) an arm 72 fixed on the shaft 73 of the roller 64.Cooperating with the arm 72 is a spring stop 74, (Figs. 3 and 4). Thearm 72 normally engages the stop 74, and thus the strip 3 is heldstationary. After an exposure is made, the operator presses back thespring 74 so as to clear the arm 72, which arm rotates with the forwardfeed of the strip or web 3 but as the arm completes its rotation itengages again with the stop 74 after the web 3 has been fed forward justsuiiiciently for the next exposure.

Means are provided for drawing forward and rewinding the strip or web 3and the embodied form thereof comprises the shaft 76 having pintles 77'ournaled in supporting frames or plates 8 at the sides of the camera.One of the pintles 77 (Fig. 5) is slotted or kcrfod at its end, toreceive the tongued end of a longitudinally slidable shaft 79. Shaft 79is provided with suitable turning means, such as a crank or handn'heel80. The shaft 79 journaled in the camera wall, or other suitable support81, to have the requisite longitudinal movement. Shaft 79 has formedtherein an annular groove 82, into which presses a leaf spring 83,holding the shaft 79 in engagement with the pintles 77. If the spring 83be pressed iin Fig. 6 a hollow cylinder 84, which may be of pastboard,metal, or other suitable.

material is shown as a support for the rewound roll of the sensitizedweb 3 after exposure. The tube 84 may he slipped upon the shaft 76. Tubeea may have a slot 86 therein, engaging with a spline or feather 87 onthe shaft 76 to cause the tube to rotate with the shaft, whilepermitting ready removal and replacement thereof.

in accordance with one feature of the invention, the interior of thecamera communicates preferably permanently with the dark room, therebyobviating and avoidin the employment of plate or roll holders, ant thetransporting of the light sensitive rolls or plates to and from the darkroom and camera before and after exposing. As embodied (Figs. 1 and3),'the camera body 1 opens at the rear through the wall 88 of the darkroom. Thus no closure is required for the end of the camera, which maybe always open, and always accessible to the operator, who may removethe exposed roll 85 in whole or in part, and may carry it to thedeveloping apparatus without any covering or protection, and just as thecondition or exigencies of the work in the dark room may permit orrequire. If the use of a plate or plates at any time is requisite orconvenient, they may be placed in the camera in the dark room andremoved after exposure in the same free and unguarded manner as thestrip or web 1 and developed in the dark room.

Theinvention in its broader aspects is not limited to the preciseconstructions herein shown and described, nor to any particular detailsof construction, but changes may be made therein without departing fromthe principles of the invention, and without sacrificing its chiefadvantages.

What I claim is 1. A camera including in combination a chamber, supplyand receiving rolls for a film. respectively supported on opposite sidesof the chamber, guide rollers mounted on opposite sides ofthe chamber,tension rollers respectively spring pressed toward said guide rollers,which are also positionable away from the guide rollers for facilitatingthe feeding of film between respective pairs of rollers. and meanscooperating with one of said guide rollers for stopping its rotationafter an amount of film for one exposure has passed over it.

2. A camera including in combination means for holding a strip of lightsensitive material, means including a guide roller for guiding the strippast the exposure position in the camera, a tension roller cooperatingwith the guide roller for exert ng a tenslon on the strip held betweenthe two rollers,

' means for holdinga strip of light sensitive both rollersbeinglsupported by the sides of the camera, and means including a memberhaving a bent slot for holding the tension roller in contact or outiofcontact with the guide roller. I

3. A camera including in combinat on means for holding a strip of lightsensitive material, means including a guide roller for guiding the strippast the exposure posit on in the camera, a tension roller cooperatingwith the guide roller for exerting a tension onthe strip held betweenthe two rollers, pintles on the tension roller, a bentslotted guidewafor the fntles, and springs actmg on t e pintles or holding them indifeferent positions in the guideway, whereby the tension roller ispositionable against or away from the guide roller.

4. A camera including in combinatlon mat'erial,a pair of guide rollersat opposite positioned against or away. from the guide rollers, andsprings for holding the tension sidesof the exposure position for thestrip,

for positioning the strip in the focal plane of the cameras pair oftension rollers re spectively cooperating with the guide rollers,

and means for holding each tension roller,

against or away from its guide roller.

5. A camera including in combination means for holding a strip of lightsensitive material, a pair of guide rollers at opposite sides of theexposure position for the strip, a air of tension rollers respectivelycooperating with the ide rollers, a guideway for the tension rofiiirswhereby they may be rollers in either of the two mentioned positions-inthe guideway.

6. A camera including in combination side frame pieces, oneatleast beingprovided with an open slot, for holding a roll of light sensitivematerial, a guide roller and a. tension roller for the strip 'ournaledin the side frame pieces, a gui eway in which the tension roller ispositionable either against or awa from the guide roller, and

' in either of its springmeans or holding the tension roller twopositions in the guideway.-

7. A camera including in combination two pairs of side frame pieces, atleast one of each pair being provided with an open slot for respectivelyholding a supply roll and a take-up roll for a strip of light sensitivematerial, guide rollers forholdi'ng said strip in the focal plane of thecamera, and tension rollers adapted to bear against said guide rollersfor holding saidstrip therebetween.

8. A camera including in combination means for holding a stri of lightsensitive.

material, a take-up roll or the strip, a tension roller for the strip, aguideway for the tension roller in which the roller is positionableeither against the guide roller or away 'from it, and spring means forholdin the tension roller in either of positions. h h

. 9. A camera including in combination a chamber, a bent,slotteduguideway at one side of the chamber for detachably holding aroll for a strip of light sensitive materia a bent, slotted guideway atthe other side of the chamber for detachably holding a take-up roll forthe light sensitive strip, and guide rollers for guiding the strip pastthe exposure position in the camera, one of said guide rollers alsoserving to measure ofi' a length of light sensitive material for oneexposure.

.10. A camera includin in combination a guideway at one its twomentioned 70 a roll for a strip of light sensitive material, a bent,slotted guideway at the other side of the chamber for detachably holdinga take-u roll for the light sensitive stri a pair 0 guide rollers, oneat either side 0 the chamber, a pair of tension .rollers resctivelycooperating with the guide rol ers, and means, including springs,for holding the tension rollers pressed toward the guide rollers, andfor holding the tension rollers away from the guide rollers. I

11. A camera including in combination a chamber, means at opposite sidesof the chamber for detachably supporting a supply roll and a take-uproll for a strip of light sensitive material, a guide roller at.

each side of the chamber for holding thelight sensitivematerial in thefocal lane of the camera, a pair of tension ro ers respectivelycooperating with the guide rollers, spring means for urging the tensionrollers toward the guide rollers and means for stop ping the rotation ofone of the guide rollers after it has measured off a section of lightsensitive material sufiicient for one exposure.

12. A camera including in combination a chamber, means at opposite sidesof the chamber for detachably supporting a supply roll anda take-up rollfor a strip of light sensitive material, a guide roller at one side ofthe chamberhaving a circumference approximately equal to the length ofone exposure, a guide roller at the other side of the chamber, saidguide rollers serv-. mg to osition the strip of light sensitive materiain the focal plane of the camera, and means cooperating with the spindleof the first guide roller. for stopping further rotation thereof afterit hasmade one revolution.

In testimony whereof, I have signed mv name to this specification.

F/RANK T. PowERs.

